Turbine rib



FIG. 1 is a perspective view of a turbine rib, showing the new design;

FIG. 2 is an enlarged perspective view thereof;

FIG. 3 is a front elevational view thereof, the rear elevational view being a mirror image thereof;

FIG. 4 is a left-side elevational view thereof, the right-side elevational view being a mirror image thereof; and,

FIG. 5 is a top plan view thereof, the bottom plan view being a mirror image thereof.

The broken lines showing a wind turbine with a plurality of the turbine ribs of the present design in FIG. 1 are included for the purpose of illustrating the invention in use, and form no part of the claimed design. 

What is claimed is the ornamental design for a turbine rib, as shown and described. 